netdev - Re: [PATCH] netpoll: cleanup sparse warnings

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Message-ID: <20130208181433.GC8771@hmsreliant.think-freely.org>
Date:	Fri, 8 Feb 2013 13:14:33 -0500
From:	Neil Horman <nhorman@...driver.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev@...r.kernel.org, fengguang.wu@...el.com,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH] netpoll: cleanup sparse warnings

On Fri, Feb 08, 2013 at 08:44:43AM -0800, Eric Dumazet wrote:
> On Fri, 2013-02-08 at 10:47 -0500, Neil Horman wrote:
> 
> > Actually, I think all we need to do is take the rcu_read_lock and use
> > rcu_dereference directly.  __netpoll_cleanup doesn't actually change the
> > dev->npinfo pointer itself, thats handled by the caller, always under protection
> > of the rtnl, so here we just need to ensure that no one changes npifo while
> > we're using it
> 
> SGTM ;)
> 
Testing it out now.  The more I look at this the more I'm concerned that there
are other problems with netpoll in the release path.  Shocking...I know :)
Neil

> 
> 
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